योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-80, verse-55

स्वप्नगन्धर्वसंकल्पनगरे कुड्यवेदनम् ।
न सन्नासद्यथा तद्वद्विद्धि दीर्घभ्रमं जगत् ॥ ५५ ॥

svapnagandharvasaṃkalpanagare kuḍyavedanam ,
na sannāsadyathā tadvadviddhi dīrghabhramaṃ jagat 55

55. svapnagandharvasaṅkalpanagare kuḍyavedanam na sat
na asat yathā tadvat viddhi dīrghabhramam jagat

55. yathā svapnagandharvasaṅkalpanagare kuḍyavedanam na sat na asat [asti],
tadvat jagat dīrghabhramam viddhi.

55. Just as in a city conjured by imagination, such as a dream-city or a Gandharva-city, the perception of its walls is neither truly existent nor truly non-existent, so too should you understand this world (jagat) as a long-lasting delusion (bhrama).

Words meanings summery:

• स्वप्नगन्धर्वसङ्कल्पनगरे (svapnagandharvasaṅkalpanagare) - in a city conjured by imagination, such as a dream-city or a Gandharva-city (in a city of imagination like a dream or a Gandharva city)

• कुड्यवेदनम् (kuḍyavedanam) - perception of walls, knowledge of walls

• न (na) - not, neither

• सत् (sat) - existent, real, good, true

• न (na) - not, nor

• असत् (asat) - non-existent, unreal, bad

• यथा (yathā) - as, just as

• तद्वत् (tadvat) - similarly, in that manner, so

• विद्धि (viddhi) - know, understand

• दीर्घभ्रमम् (dīrghabhramam) - a long-lasting delusion (bhrama) (a long delusion, long-lasting error)

• जगत् (jagat) - this world (world, universe)

Words meanings and morphology

स्वप्नगन्धर्वसङ्कल्पनगरे (svapnagandharvasaṅkalpanagare) - in a city conjured by imagination, such as a dream-city or a Gandharva-city (in a city of imagination like a dream or a Gandharva city)

(noun)

Locative, neuter, singular of svapnagandharvasaṅkalpanagara

svapnagandharvasaṅkalpanagara - a city of imagination like a dream or a Gandharva city

Compound type : karmadhāraya (svapna+gandharva+saṅkalpa+nagara)

• svapna – dream, sleep
  noun (masculine)
  Root: svap (class 2)
• gandharva – Gandharva (a class of celestial beings, associated with music and often illusion)
  proper noun (masculine)
• saṅkalpa – intention, imagination, determination, mental conception
  noun (masculine)
  from sam- + √kḷp
  Prefix: sam
  Root: kḷp (class 1)
• nagara – city, town
  noun (neuter)

Note: The compound implies a city created by such imaginative processes.

कुड्यवेदनम् (kuḍyavedanam) - perception of walls, knowledge of walls

(noun)

Nominative, neuter, singular of kuḍyavedana

kuḍyavedana - perception/knowledge of walls

Compound type : tatpurusha (kuḍya+vedana)

• kuḍya – wall
  noun (neuter)
• vedana – perception, feeling, knowledge
  noun (neuter)
  from √vid (to know, perceive)
  Root: vid (class 2)

Note: Subject of "na sat na asat".

न (na) - not, neither

(indeclinable)

negation

सत् (sat) - existent, real, good, true

(adjective)

Nominative, neuter, singular of sat

sat - existent, real, true, good, being

Present Active Participle

from √as (to be)

Root: as (class 2)

न (na) - not, nor

(indeclinable)

negation

असत् (asat) - non-existent, unreal, bad

(adjective)

Nominative, neuter, singular of asat

asat - non-existent, unreal, false, bad, non-being

Present Active Participle (negative)

a- (negation) + √as (to be)

Compound type : avyayībhāva (a+sat)

• a – not, non-
  indeclinable
  negative prefix
• sat – existent, real, being
  adjective
  Present Active Participle
  from √as
  Root: as (class 2)

यथा (yathā) - as, just as

(indeclinable)

Note: Corresponds to 'tadvat'.

तद्वत् (tadvat) - similarly, in that manner, so

(indeclinable)

from tad + -vat

Note: Corresponds to 'yathā'.

विद्धि (viddhi) - know, understand

(verb)

2nd person , singular, active, imperative (loṭ) of vid

Root: vid (class 2)

दीर्घभ्रमम् (dīrghabhramam) - a long-lasting delusion (bhrama) (a long delusion, long-lasting error)

(noun)

Accusative, masculine, singular of dīrghabhrama

dīrghabhrama - long delusion, prolonged error, long-lasting illusion

Compound type : karmadhāraya (dīrgha+bhrama)

• dīrgha – long, prolonged, extensive
  adjective
• bhrama – wandering, error, delusion, illusion (bhrama)
  noun (masculine)
  from √bhram (to wander, to err)
  Root: bhram (class 1)

Note: Object of 'viddhi'.

जगत् (jagat) - this world (world, universe)

(noun)

Accusative, neuter, singular of jagat

jagat - world, universe, moving, living beings

Present Active Participle

from √gam, moving

Root: gam (class 1)

Note: Object of 'viddhi'.